"""Медиа партии (фото): загрузка/просмотр/удаление, валидация, лимит, запрет после финиша."""
from __future__ import annotations

from fastapi.testclient import TestClient

from tests.conftest import add_group_member, csrf_headers, finish_match, login, start_match

PNG = b"\x89PNG\r\n\x1a\n" + b"\x00" * 64


def _use_tmp_uploads(monkeypatch, tmp_path) -> None:
    from app.core.config import settings

    monkeypatch.setattr(settings, "dev_upload_dir", str(tmp_path))


def _start(client: TestClient, engine) -> tuple[dict, int, int, int]:
    me = login(client, "Хост")
    exps = [e["id"] for e in client.get("/api/expansions").json()]
    gid = client.post(
        "/api/groups", json={"name": "Группа", "expansion_ids": exps}, headers=csrf_headers(client)
    ).json()["id"]
    p2 = add_group_member(engine, gid, "Игрок2")
    fids = [f["id"] for f in client.get(f"/api/groups/{gid}/factions").json()]
    started = start_match(
        client,
        gid,
        [{"user_id": me["id"], "faction_id": fids[0]}, {"user_id": p2, "faction_id": fids[1]}],
    )
    assert started.status_code == 200, started.text
    return me, gid, p2, started.json()["id"]


def _upload(client: TestClient, mid: int, name: str = "a.png", data: bytes = PNG, mime: str = "image/png"):
    return client.post(
        f"/api/matches/{mid}/attachments",
        files={"file": (name, data, mime)},
        headers=csrf_headers(client),
    )


def test_upload_view_delete(client: TestClient, engine, monkeypatch, tmp_path):
    _use_tmp_uploads(monkeypatch, tmp_path)
    me, gid, p2, mid = _start(client, engine)

    r = _upload(client, mid)
    assert r.status_code == 200, r.text
    aid = r.json()["id"]
    assert r.json()["url"] == f"/api/matches/{mid}/attachments/{aid}"

    detail = client.get(f"/api/matches/{mid}").json()
    assert [a["id"] for a in detail["attachments"]] == [aid]

    g = client.get(f"/api/matches/{mid}/attachments/{aid}")
    assert g.status_code == 200 and g.content == PNG
    assert g.headers["content-type"] == "image/png"

    d = client.delete(f"/api/matches/{mid}/attachments/{aid}", headers=csrf_headers(client))
    assert d.status_code == 200, d.text
    assert client.get(f"/api/matches/{mid}").json()["attachments"] == []


def test_reject_non_image_and_limit(client: TestClient, engine, monkeypatch, tmp_path):
    _use_tmp_uploads(monkeypatch, tmp_path)
    _me, _gid, _p2, mid = _start(client, engine)

    assert _upload(client, mid, "x.txt", b"nope", "text/plain").status_code == 422

    for i in range(10):
        assert _upload(client, mid, f"{i}.png").status_code == 200
    assert _upload(client, mid, "over.png").status_code == 409


def test_no_changes_after_finish(client: TestClient, engine, monkeypatch, tmp_path):
    _use_tmp_uploads(monkeypatch, tmp_path)
    me, gid, p2, mid = _start(client, engine)
    aid = _upload(client, mid).json()["id"]

    fin = finish_match(
        client, mid, [{"user_id": me["id"], "place": 1}, {"user_id": p2, "place": 2}],
        win_reason="objectives",
    )
    assert fin.status_code == 200, fin.text

    # После завершения игрок не может ни добавлять, ни удалять.
    assert _upload(client, mid).status_code == 409
    assert client.delete(
        f"/api/matches/{mid}/attachments/{aid}", headers=csrf_headers(client)
    ).status_code == 409
    # Но просмотр сохраняется.
    assert client.get(f"/api/matches/{mid}").json()["attachments"][0]["id"] == aid


def test_admin_manage_attachments_on_finished(
    client: TestClient, engine, make_admin, monkeypatch, tmp_path
):
    _use_tmp_uploads(monkeypatch, tmp_path)
    me, gid, p2, mid = _start(client, engine)
    fin = finish_match(
        client, mid, [{"user_id": me["id"], "place": 1}, {"user_id": p2, "place": 2}],
        win_reason="objectives",
    )
    assert fin.status_code == 200, fin.text

    make_admin("admin", "secret123")
    assert client.post(
        "/api/admin/auth/login",
        json={"username": "admin", "password": "secret123"},
        headers=csrf_headers(client),
    ).status_code == 200

    # Админ добавляет медиа к ЗАВЕРШЁННОЙ партии (игроку это запрещено).
    up = client.post(
        f"/api/admin/matches/{mid}/attachments",
        files={"file": ("a.png", PNG, "image/png")},
        headers=csrf_headers(client),
    )
    assert up.status_code == 200, up.text
    aid = up.json()["id"]
    assert up.json()["url"] == f"/api/admin/matches/{mid}/attachments/{aid}"

    assert any(a["id"] == aid for a in client.get(f"/api/admin/matches/{mid}/attachments").json())
    g = client.get(f"/api/admin/matches/{mid}/attachments/{aid}")
    assert g.status_code == 200 and g.content == PNG

    d = client.delete(
        f"/api/admin/matches/{mid}/attachments/{aid}", headers=csrf_headers(client)
    )
    assert d.status_code == 200, d.text
    assert client.get(f"/api/admin/matches/{mid}/attachments").json() == []


def test_non_member_cannot_view(client: TestClient, engine, monkeypatch, tmp_path):
    _use_tmp_uploads(monkeypatch, tmp_path)
    _me, _gid, _p2, mid = _start(client, engine)
    aid = _upload(client, mid).json()["id"]

    login(client, "Чужак")  # не состоит в группе
    g = client.get(f"/api/matches/{mid}/attachments/{aid}")
    assert g.status_code in (401, 403)